<template>
	<div class="my-tab-bar">
		<div class="tab-item" 
		:class="{current: activeIndex === index}"
		@click="change(index, item.componentName)"
		v-for="(item, index) in arr" :key="index">
			<!-- 图标 -->
			<span class="iconfont" :class="item.iconText"></span>
			<!-- 文字 -->
			<span> {{ item.text }} </span>
		</div>
	</div>
</template>

<script>
	export default {
		props:{
			arr: {
				type: Array,		
				required: true,	

				validator(value){			
					console.log(value); 
					if(value.length >=2 && value.length <= 5) return true
					return false 
				}
			}
		},
		data () {
			return {
				activeIndex: 0,
			}
		},
		methods: {
			change(index, comName){
				this.activeIndex = index
				this.$emit("changCom", comName)
			}
		}

	}
</script>

<style lang="less" scoped>
	.my-tab-bar {
		position: fixed;
		left: 0;
		bottom: 0;
		width: 100%;
		height: 50px;
		border-top: 1px solid #ccc;
		display: flex;
		justify-content: space-around;
		align-items: center;
		background-color: white;

		.tab-item {
			display: flex;
			flex-direction: column;
			align-items: center;
		}
	}

	.current {
		color: #1d7bff;
	}
</style>
